CVE-2015-8701

Severity

21%

Complexity

39%

Confidentiality

48%

QEMU (aka Quick Emulator) built with the Rocker switch emulation support is vulnerable to an off-by-one error. It happens while processing transmit (tx) descriptors in 'tx_consume' routine, if a descriptor was to have more than allowed (ROCKER_TX_FRAGS_MAX=16) fragments. A privileged user inside guest could use this flaw to cause memory leakage on the host or crash the QEMU process instance resulting in DoS issue.

QEMU (aka Quick Emulator) built with the Rocker switch emulation support is vulnerable to an off-by-one error. It happens while processing transmit (tx) descriptors in 'tx_consume' routine, if a descriptor was to have more than allowed (ROCKER_TX_FRAGS_MAX=16) fragments. A privileged user inside guest could use this flaw to cause memory leakage on the host or crash the QEMU process instance resulting in DoS issue.

CVSS 3.0 Base Score 6.5. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H).

CVSS 2.0 Base Score 2.1. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (AV:L/AC:L/Au:N/C:N/I:N/A:P).

Overview

First reported 8 years ago

2016-12-29 22:59:00

Last updated 7 years ago

2017-07-01 01:29:00

Affected Software

QEMU

References

[oss-security] 20151228 CVE request Qemu net: rocker: fix an incorrect array bounds check

Mailing List, Third Party Advisory

[oss-security] 20151229 Re: CVE request Qemu net: rocker: fix an incorrect array bounds check

Mailing List, Third Party Advisory

79706

Third Party Advisory, VDB Entry

https://bugzilla.redhat.com/show_bug.cgi?id=1286971

Issue Tracking

[qemu-devel] 20151226 [PATCH v2] net: rocker: fix an incorrect array bounds check

Patch, Vendor Advisory

GLSA-201602-01

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